Php 调用未定义的方法CI_DB_mysql_driver:：get_compiled_select（）？

我有下面的sql活动记录查询，它给出了这个错误。我有内部选择查询，所以为什么我试图使用这个方法，我在谷歌上发现，但它给出的错误是，得到_遵守_选择没有定义。如何解决此错误，或者是否有其他更好的方法编写以下查询？谢谢

        $this->db->select('id_dem');
    $this->db->from('dem_demos');
    $this->db->where('id_dem IN (".implode("," ,$id_v).") OR maindemo_dem IN (".implode(",",$id_v).")');
    $innermost_query = $this->db->get_compiled_select();

    $this->db->select('COUNT(demo_vis) as tot_visits');
    $this->db->from('sta_views');
    $this->db->where('countvisit_wis != "N" AND demo_vis IN $innermost_query AND date_vis BETWEEN 
    ".$date_s." AND ".$date_e."');
    $first_query = $this->db->get_compiled_select();

    $this->db->select('COUNT(demo_vis) as tot_visits');
    $this->db->from('sta_views');
    $this->db->where('countvisit_wis != "N"
                  AND demo_vis IN $innermost_query AND date_vis BETWEEN ".$date_s." AND ".$date_e." AND 
                  invited_vis = 0');
    $second_query = $this->db->get_compiled_select();

    $this->db->select('COUNT(demo_vis) as tot_visits');
    $this->db->from('sta_views');
    $this->db->where('countvisit_wis != "N"
                  AND demo_vis IN $innermost_query AND date_vis BETWEEN ".$date_s." AND ".$date_e." AND 
                  invited_vis > 0');
    $third_query = $this->db->get_compiled_select();

    $this->db->select('COUNT(conversion_vis)');
    $this->db->from('sta_views');
    $this->db->where('countvisit_wis != "N"
                  AND demo_vis IN $innermost_query AND date_vis BETWEEN ".$date_s." AND ".$date_e." AND 
                  invited_vis = 0 AND conversion_vis = 1');
    $fourth_query = $this->db->get_compiled_select();

    $this->db->select('COUNT(buy_vis)');
    $this->db->from('sta_views');
    $this->db->where('countvisit_wis != "N"
                  AND demo_vis IN $innermost_query AND date_vis BETWEEN ".$date_s." AND ".$date_e." AND 
                  buy_vis = 1');
    $fifth_query = $this->db->get_compiled_select();

    $this->db->select('COUNT(distinct session_vis) as unique_visits');
    $this->db->from('sta_views');
    $this->db->where('countvisit_wis != "N"
                  AND demo_vis IN $innermost_query AND date_vis BETWEEN ".$date_s." AND ".$date_e."');
    $sixth_query = $this->db->get_compiled_select();

    $query  = $this->db->select('$first_query as total_views, $second_query as website_views, $third_query as demosent_views,
    $fourth_query as website_conversions, $fifth_query as buy_now_clicks, $$sixth_query as unique_views');
    if ($query->num_rows() > 0){
        return $query->row_array();
    }else{
        return FALSE;
    }

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设置数据库配置文件<代码>$active_record=TRUE和trypost也会显示错误消息更改此

$autoload['libraries']=array（'database'）

在

auotoad.php

中，我通过在system/database/DB\u driver.php文件中添加get\u compiled\u select（）函数解决了这个问题。它以前不存在，这就是它给出未定义错误的原因。如果要将SQL添加到select行，则需要添加一个类似以下的假参数：

$this->db->select（“count（..）…），FALSE）

。我还看到了：

$$sixth\u query

，这是打字错误吗？